﻿MELOLONTHIDiE OF THE UNITED STATES, 237 



V. Palpi maxillares articulo ultimo impresso ; antennas 10-articulatae ; corpus cylindricum, 



supra glabrum, capite magno Sp. 8 — 13. 



Palpi maxillares articulo ultimo tenui haud impresso. 



a. Antennae 10-articulatae. 



VI. Tibiae posticse maris calcare interno obliquo ; (corpus glabrum) Sp. 14. 



VII. Tibiee posticae maris calcare interno elongato contorto; (corpus glabrum, margine longe 

 fimbriate) Sp. 15. 



VIII. Tibia? posticae maris calcare interno recto, (corpus supra glabrum, vix fimbriatum) ; 



* Thorax haud serratus ; clypeus fortius marginatus, vix emarginatus Sp. 16 — 21. ' 



** Thorax serratus vel haud serratus ; clypeus anguste marginatus, fortius emarginatus Sp. 22 — 30. 

 *** Thorax lateribus serratis medio angulatis Sp. 31 — 34. 



IX. Tibiae sicut in VIII : corpus supra pubescens Sp. 35 — 38. 



b. Antennae 9-articulatae. 



X. Clypeus emarginatus 39 — 45. 



XI. Clypeus integerrimus 46. 



C. Ungues ad medium dentati ; tibiae posticae sexus utriusque calcaribus liberis gracilibus ; abdomen 

 articulo ultimo brevissimo ; (antenna? 10-articulatae); mandibulae ad apicem conspicuee. 



XII. Clypeus subemarginatus ; species pubescentes Sp. 47 — 50. 



XIII. Species pruinosae _ Sp. 51 — 52. 

 XIV.* Clypeus integerrimus ; species thorace piloso Sp. 53. 



D. Ungues intra medium breviter dentati, tibiae posticae sexus utriusque calcaribus liberis gracilibus ; ab- 

 domen articulo ultimo brevi ; mandibulae occultae ; (antennae 10-articulatae) Sp. 53 — 55. 



Group I. 

 We have here a single species remarkable by the small scales which cover the surface. 

 The male is winged, the female apterous and very obese in form. The antennae are 

 10-jointed; the mandibles are prominent, and the last joint of the maxillary palpi is 

 elongate and not impressed. The thorax is short, not narrowed at the base. The 

 spurs of the posterior tibiae are free in both sexes : the claws are long and slender and 

 are armed with a sharp tooth near the base. 



1. L. lanceolata, fusco-nigra, alutacea, opaca squamis sordide pallidis lanceolatis undique tecta, 

 clypeo reflexo late rotundato, elytris lineis saepe subdenudatis notatis, pectore villoso, pedibus obscure 

 castaneis. Long. -52 — -68. 



Melolontha lanceolata Say, Journ. Acad. Nat. Sc. 3, 242. 



Tostcgoptera lanceolata Blanehard, Cat. Col. Mus. Paris, 149 ; Burm. Lamell. 2, 2nd, 356. 



Ancylonycha lanceolata Lacordaire, Gen. Coleop. 3, 285. 



Kansas and New Mexico, as far east as Fort Riley. * 



Male oblong, winged ; with the club of the antennas as long as the stem ; the 2 — 4 



* Here maybe placed a group containing Trichestes cylindrica Burm. from Cuba, distinguished by the 

 9-jointed antennae, and very faintly emarginate clypeus ; the maxillary palpi are slightly impressed and the 

 body is cylindrical as in group V: the tooth of the ungues is short, and the club of the antennae of the male is 

 composed of four joints. 



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